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Finding the Fourth Proportional to 354,589.43, 489,323.70 and 193,444.43

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Solution

The fourth proportional to 354,589.43, 489,323.70 and 193,444.43 is: 266,948.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,589.43 : 489,323.70 = 193,444.43 : x
  2. Step 2: Convert to fraction form
    354,589.43/489,323.70 = 193,444.43/x
  3. Step 3: Cross multiply
    354,589.43x = 489,323.70 × 193,444.43
  4. Step 4: Simplify right side
    354,589.43x = 94,656,941,785.37
  5. Step 5: Solve for x
    x = 94,656,941,785.37/354,589.43
  6. Step 6: Final answer
    x = 266,948.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.